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TOPIC: Re:Math Doubts
#3157
Garima (User)
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Re:Math Doubts 1 Year ago Karma: 0  
Great, thank you so much!
 
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#3167
arcchid (User)
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Re:Math Doubts 1 Year ago Karma: 0  
For Question 3: is the answer b. 42/7..I tried the averages method....But I dont know If I was right in my calculations.
 
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#3188
Huzefa (Moderator)
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Re:Math Doubts 1 Year ago Karma: 13  
arcchid wrote:
For Question 3: is the answer b. 42/7..I tried the averages method....But I dont know If I was right in my calculations.

Yes Arcchid,

The answer for the third one is indeed 4 2/7 or 30/7..well done! Keep posting!
 
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#3196
Garima (User)
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Re:Math Doubts 1 Year ago Karma: 0  
I have 2 more diagram doubts.
Thanks!
File Attachment:
File Name: GRE_Math.doc
File Size: 43520
 
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#3197
Garima (User)
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Re:Math Doubts 1 Year ago Karma: 0  
I have 2 more diagram doubts.
Thanks!
File Attachment:
File Name: GRE_Math-26d8bf5c78ce2cc4565d894324e19172.doc
File Size: 43520
 
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#3202
bhavin (Moderator)
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Re:Math Doubts 1 Year ago Karma: 25  
Garima wrote:
I have 2 more diagram doubts.
Thanks!
File Attachment:
File Name: GRE_Math.doc
File Size: 43520


Hello Garima,

For the 1st question ...diagram is not very clear to me ...
I dont think they have mentioned its a rt angled triangle ..I mean it could just be a sign of an angle, which cannot be concluded from the figure, its a lilltle blur ...

If indeed, its a rt angle, then Ans is B, since radius is 6/root2 ...

However , if its not a rt angle, then radius of circle could be less than or greater than 6 ...Hence nothing conclusive ..Ans D ....


Question 2 :
Use similarity of triangles for triangles ABC and ADE

So, AB/AD = BC/ DE
Hence, AB/AD = 2/3

i.e AD/AB = 3/2

and AD = AB+BD
So, sub and solve ,

We get AB = 24 ..

Feel free to clarify !!

Keep going !
 
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